/Engine/Plugins/Online/OnlineFramework/Source/Party/Public/SocialManager.h
void CreateParty ( const [FOnlinePartyTypeId](API\Plugins\OnlineSubsystem\FOnlinePartyTypeId) & PartyTypeId, const [FPartyConfiguration](API\Plugins\OnlineSubsystem\Interfaces\FPartyConfiguration) & PartyConfig, const [FOnCreatePartyAttemptComplete](API\Plugins\Party\USocialManager\FOnCreatePartyAttemptComplete) & OnCreatePartyComplete )